Another spanner question

[Northwoods]

HeelSpur's spanner question reminded me of a pair that I have.  They are identical little wrenches--except that one is 5", the other 6".
They have the spanner on one end and a 3/8" open end on the other, set at a 90 degree angle.  They are obviously made to turn square nuts.
No markings at all.
What would these little buggers have been made for?

[mvwcnews]

Perhaps water pump "stuffing box" adjustment?  bicycle crank bearing cone adjustment?   Think of places where a spinning shaft would have a bearing / liquid seal / grease seal, etc. that could be adjusted -- have to think like a late 19th Century / early 20th Century mechanic & consider what they had to work with.